10 Commits
0.1 ... 0.5

Author SHA1 Message Date
8f7fe4f016 added label for T(max) to chart. 2026-02-02 09:54:12 +01:00
114a194758 enhanced .gitignore 2026-02-02 07:29:00 +01:00
08acce525b enhanced command line parsing. 2026-02-01 10:21:35 +01:00
34d8ba7214 first usable plot_cpu_temp_compare.sh 2026-01-30 08:03:00 +01:00
954e387544 updated README.md 2026-01-24 10:26:20 +01:00
f22b2a8e82 added .gitignore 2026-01-24 09:15:44 +01:00
e9da74e3c8 added usage() 2026-01-24 09:14:36 +01:00
fb803c13f0 added usage to measure_temp.sh
run-cpu-stress.sh uses the  job file in fio.
2026-01-24 06:20:50 +01:00
b8c8a18db3 added script for mesuring core temperature and generating log file. 2026-01-24 05:54:27 +01:00
87540bf04b Script for stressing and measure temperature added. 2026-01-24 05:52:36 +01:00
6 changed files with 163 additions and 47 deletions

6
.gitignore vendored Normal file
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*.log
*.bak
*.png
bin/minimal_test.sh

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# pistress
Measure the CPU core temperature on a Raspberry Pi on full load
A bunch of scripts for measuring the core temperature of the Raspberry Pi 5 CPU under full load
and plotting graphs .
Requirements: fio, gnuplot

26
bin/measure_temp.sh Executable file
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#!/bin/bash
START=$(date +%s)
usage() {
local name=${0##*/}
cat <<-EOF
Usage: ${name} [-h || --help]
measures the pu core temperature an echoes with a squenence number to stdout.
EOF
}
if [[ "$1" == "-h" || "$1" == "--help" ]]; then
usage
exit 0
fi
while true; do
NOW=$(date +%s)
TS=$((NOW - START))
TEMP=$(vcgencmd measure_temp | sed 's/[^0-9.]//g')
echo "$TS $TEMP"
sleep 1
done

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#!/bin/bash
# Eingabeparameter
LOGFILE="${1}"
OUTFILE="${2}"
TITLE="${3}"
usage() {
local name=${0##*/}
cat <<-EOF
Usage: ${name} [-h || --help] <logfile> <outfile> <title>
Generates graph of the <logfile> and writes it to <outfile>
EOF
}
verbose=false
COLOR='red'
PADDING=5
VALID_ARGS=$(getopt -o vho:c:t:l: --long verbose,help,output,color:,title:,logfile: -- "$@")
if [[ $? -ne 0 ]]; then
exit 1;
fi
echo "VALID_ARGS=${VALID_ARGS}"
eval set -- "$VALID_ARGS"
while [ : ]; do
# echo "aktueller Parameter: ${1}"
case "$1" in
-h | --help)
usage
exit 0
shift
;;
-l | --logfile)
LOGFILE="${2}"
echo "LOGFILE=${LOGFILE}"
shift 2
;;
-o | --output)
echo "1: ${1}, 2:${2},3:${3}"
OUTFILE="${2}"
echo "OUTFILE=${OUTFILE}"
shift 2
;;
-c | --color)
COLOR="${2}"
echo "COLOR=${COLOR}"
shift 2
;;
-t | --title)
TITLE="${2}"
echo "TITLE=${TITLE}"
shift 2
;;
-v | --verbose)
verbose=true
shift
;;
--) shift;
break
;;
esac
done
#determine max and min values
read YMIN YMAX < <(
awk '
NR==1 { min=$2; max=$2 }
$2 < min { min=$2 }
$2 > max { max=$2 }
END { printf "%.1f %.1f\n", min, max }
' "${LOGFILE}"
)
echo "YMIN=${YMIN} YMAX=${YMAX}"
echo "Parameter geparsed."
# Eingabeparameter
if [ -z "$LOGFILE" ] || [ -z "$OUTFILE" ] || [ -z "$TITLE" ]; then
echo "Usage: ${0} <temp.log> <output.png> <title>"
usage
exit 1
fi
gnuplot <<EOF
set terminal pngcairo size 1600,900
set output "$OUTFILE"
echo "generating plot from ${LOGFILE}"
gnuplot \
-e "OUTFILE='${OUTFILE}'" \
-e "LOGFILE='${LOGFILE}'" \
-e "TITLE='${TITLE}'" \
-e "COLOR='${COLOR}'" \
-e "YMAX=${YMAX}" \
-e "PADDING=${PADDING}" \
-e "YMIN=${YMIN}" \
-e "
set terminal pngcairo size 1800,800;
set output OUTFILE;
set title TITLE;
set xlabel 'Zeit (s)';
set ylabel 'Temperatur (°C)';
set grid;
set key top left;
set title "$TITLE"
set xlabel "Zeit (s)"
set ylabel "Temperatur (°C)"
set grid
set key top left
set label sprintf('Tmax: %.1f°C', YMAX-PADDING) at graph 0.98,0.02 right;
plot LOGFILE using 1:2 with lines lc rgb COLOR lw 2 title 'CPU-Temperatur';
"
# Linie rot, Dicke 2
plot "$LOGFILE" using 1:2 with lines lc rgb "red" lw 2 title "CPU-Temperatur"
EOF
echo "Plot erzeugt: $OUTFILE"
exit 0

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#!/bin/bash
ACTIVE_LOG="${1}"
ICE_LOG="${2}"
OUTFILE="${3}"
TITLE="${4}
ACTIVE_LOG="$1"
ICE_LOG="$2"
OUTFILE="$3"
TITLE="$4"
if [ -z "${ACTIVE_LOG}" ] || [ -z "${ICE_LOG}" ] || [ -z "${OUTFILE}" ]; then
echo "Usage: $0 <temp_active.log> <temp_ice.log> <output.png>"
echo "Usage: $0 <temp_active.log> <temp_ice.log> <output.png> [title]"
exit 1
fi
echo "ACTIVE_LOG=${ACTIVE_LOG}"
echo "ICE_LOG=${ICE_LOG}"
echo "OUTFILE=${OUTFILE}"
echo "TITLE=${TITLE}"
gnuplot <<EOF
set terminal pngcairo size 1800,800
set output "${OUTFILE}"
gnuplot -e "
set terminal pngcairo size 1800,800;
set output '${OUTFILE}';
set multiplot layout 1,2 title '${TITLE}';
set xlabel 'Zeit (s)';
set ylabel 'Temperatur (°C)';
set grid;
set key top left;
set yrange [0:100];
set title 'Active Cooler';
plot '${ACTIVE_LOG}' using 1:2 with lines lc rgb 'red' lw 2 title 'CPU-Temperatur';
set title 'Ice Tower Cooler 5';
plot '${ICE_LOG}' using 1:2 with lines lc rgb 'blue' lw 2 title 'CPU-Temperatur';
unset multiplot;
"
set multiplot layout 1,2 title "${TITLE}"
set xlabel "Zeit (s)"
set ylabel "Temperatur (°C)"
set grid
set key top left
# Einheitliche Y-Achse für fairen Vergleich
set yrange [30:90]
# Plot 1: Active Cooler
set title "Active Cooler"
plot "$I{ACTIVE_LOG}" using 1:2 with lines lc rgb "red" lw 2 title "CPU-Temperatur"
# Plot 2: Ice Tower Cooler
set title "Ice Tower Cooler 5"
plot "${ICE_LOG}" using 1:2 with lines lc rgb "blue" lw 2 title "CPU-Temperatur"
unset multiplot
EOF
echo "Vergleichsplot erzeugt: ${OUTFILE}"
exit 0

5
bin/run-cpu-stress.sh Executable file
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measure_temp.sh > ${1} &
TPID=$!
fio ~/git/pistress/fio/fio_cpu
kill $TPID > /dev/null